US4469826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of dispersions of polymers in non-aqueous vehicles
Assignee: Sun Chemical Corp
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Filing: 1983-06-02
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Granted: 1984-09-04
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Expires: 2003-06-02
Abstract
Abstract Dispersions of polymer particles in non-aqueous vehicles are prepared by transferring the finely-divided polymer particles directly from an aqueous latex containing about 5 percent to 60 percent by weight of the polymer particles into the non-aqueous vehicle. The resulting dispersions can be used in the production of lithographic inks.
Inventors
- 👤 Daniel J. Carlick
- 👤 Olgierd Wasilewski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:10
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/09; C08J3/11; C08F; C08F6/00; C08F6/14; C08F6/22; C09; C09D; C09D11/00; C09D11/02; Y; Y10; Y10S; Y10S260/00; Y10S260/38
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
138 words
In a process for the production of dispersions of finely-divided polymer particles in non-aqueous vehicles wherein an aqueous latex containing about 5 percent to 60 percent by weight of a thermoplastic polymer is coagulated, a non-aqueous vehicle is added to the coagulated latex, the mixture of coagulated latex and vehicle is agitated until a water phase separates, and the water phase is separated from the dispersion of polymer in the non-aqueous vehicle, the improvement wherein the aqueous latex is coagulated by adding to it a coagulating agent that consists of alum and a fatty alcohol having 10 to 14 carbon atoms in the amount of about 1 part to 10 parts by weight of alcohol per part by weight of alum, said dispersions of finely-divided polymer particles in non-aqueous vehicles being suitable for use in lithographic printing inks.
Claim 2
Dependent Claim
138 words
In a process for the production of dispersions of finely-divided polymer particles in non-aqueous vehicles wherein an aqueous latex containing about 5 percent to 60 percent by weight of a thermoplastic polymer is coagulated, a non-aqueous vehicle is added to the coagulated latex, the mixture of coagulated latex and vehicle is agitated until a water phase separates, and the water phase is separated from the dispersion of polymer in the non-aqueous vehicle, the improvement wherein the aqueous latex is coagulated by adding to it a coagulating agent that consists of alum and a fatty alcohol having 10 to 14 carbon atoms in the amount of about 1 part to 10 parts by weight of alcohol per part by weight of alum, said dispersions of finely-divided polymer particles in non-aqueous vehicles being suitable for use in lithographic printing inks.
Claim 3
Dependent Claim
130 words
The process of claim 20 that comprises the steps of (a) coagulating an aqueous latex containing about 5 percent to 60 percent by weight of a thermoplastic polymer by adding to it a coagulating agent that consists of alum and a fatty alcohol having 10 to 14 carbon atoms in the amount of about 1 part to 10 parts by weight of alcohol per part by weight of alum, (b) adding to the coagulated latex a non-aqueous vehicle, (c) agitating the mixture of said coagulated latex and non-aqueous vehicle until a water phase separates from the dispersion of polymer in the non-aqueous vehicle, (d) removing the separated water from said dispersion, and (e) repeating steps (c) and (d) until the dispersion contains less than 2 percent by weight of water.
Claim 4
Dependent Claim
45 words
The process of claim 2 wherein in step (a) the aqueous latex is coagulated by adding to it a coagulating agent that contains alum and dodecanol in the amount of 1.5 parts to 5 parts by weight of dodecanol per part by weight of alum.
Claim 5
Dependent Claim
35 words
The process of claim 6 wherein 0.5 part to 2 parts by weight of alum and 0.5 part to 5 parts by weight of dodecanol are added, based on the weight of the aqueous latex.
Claim 6
Dependent Claim
22 words
The process of claim 2 wherein alum is added to the aqueous latex as a 25 percent to 50 percent aqueous solution.
Claim 7
Dependent Claim
17 words
The process of claim 1 wherein in step (b) a defoamer is added to the coagulated latex.
Claim 8
Dependent Claim
56 words
The process of claim 1 wherein the latex contains about 5 percent to 60 percent by weight of a polymer selected from the group consisting of vinyl halide homopolymers and copolymers, styrene homopolymers and copolymers, acrylic polymers, and mixtures thereof, said polymer having an average particle size in the range of 0.05 micron to 2 microns.
Claim 9
Dependent Claim
33 words
The process of claim 7 wherein the latex contains about 40 percent to 60 percent by weight of polymer having an average particle size in the range of 0.1 micron to 0.3 micron.
Claim 10
Dependent Claim
15 words
The process of claim 1 wherein the polymer in the aqueous latex is polyvinyl chloride.
Claim 11
Dependent Claim
18 words
The process of claim 1 wherein the polymer in the aqueous latex is a vinyl chloride-vinyl acetate copolymer.
Claim 12
Dependent Claim
14 words
The process of claim 1 wherein the non-aqueous vehicle is a lithographic ink vehicle.
Claim 13
Dependent Claim
49 words
The process of claim 11 wherein the lithographic ink vehicle is a solution of about 5 percent to 50 percent by weight of a hard resin in about 5 percent to 60 percent by weight of a plasticizer, said weights being based on the weight of the finished dispersion.
Claim 14
Dependent Claim
32 words
The process of claim 12 wherein the hard resin is selected from the group consisting of alkyd resins, urethane-modified alkyd resins, hydrocrbon resins, rosin esters, rosin-modified phenolic resins, polyketones, and mixtures thereof.
Claim 15
Dependent Claim
28 words
The process of claim 12 wherein the plasticizer is selected from the group consisting of hydrocarbon oils, long-chain esters, hindered phthalates, hindered adipates, polymeric plasticizers, and mixtures thereof.
Claim 16
Dependent Claim
11 words
The product that is prepared by the process of claim 1.
Claim 17
Dependent Claim
17 words
A lithographic printing ink that comprises the product of the process of claim 1 and a pigment.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-09-04 | 1988-03-05 | 1988-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-04 | 1992-03-05 | 1992-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-04 | 1996-03-05 | 1996-09-04 | $7700.00 | Window Closed / Lapsed |